Groot 1988. Groot, A. de (1988). "Herberts, Herman". Biografisch lexicon voor de geschiedenis van het Nederlands protestantisme (in Dutch). Vol. 3. pp. 178–181.
Groot 1988, . Herbers was accused, among other things, of embracing the ideas of the Anabaptist David Joris, which he contested without rejecting his work. Herbers was also accused of not taking the Bible literally, but mainly teaching the biblical symbolism and spirit of the Bible and proclaiming a mystical experience of faith. Groot, A. de (1988). "Herberts, Herman". Biografisch lexicon voor de geschiedenis van het Nederlands protestantisme (in Dutch). Vol. 3. pp. 178–181.
